Abstract
Contact behavior at the tool-workpiece and the tool-chip interface affects the machined surface integrity, and it is especially significant in micromachining. In order to predict surface integrity in multi-pass orthogonal micro-cutting from numerical simulation, it is important to define the contact between these different surfaces. In this article, contact in micro-cutting of the 316L stainless steel with a tungsten carbide tool is investigated within tribology tests at different sliding velocities combined with numerical simulation in order to study the evolution of the friction coefficient. Finally, a friction coefficient function of sliding velocity is integrated in orthogonal micro-cutting finite element model and its relevance in the context of multi-pass micro-cutting is discussed.
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